Boost & Bury
Send commercially without overwriting relevance.
Boost suitable products when there is a clear commercial reason and bury only when a result is demonstrably less desirable.
Start with relevance
Commercial rules should only count after a product fits the query in terms of content.
Use small weights
Big boosts can displace exact or substantively better matches. Start conservative and measure the effect.
Work with conditions
Limit rules by category, brand, stock status, period, or specific query group.
Prevent permanent exceptions
Specify temporary campaigns an end date and widely outdated rules.
Measure effect
Compare CTR, conversion and zero-result searches before and after the change.